Russia's Daria Kasatkina delivered an early surprise at the French Open on Wednesday as she knocked 10th seed Belinda Bencic out in the second round.
The world number 37 will now face the winner of Sorana Cirstea against Martina Trevisan in the third round.
Slovenia's Tamara Zidansek also progressed in straight sets.
The 23-year-old beat American Madison Brengle 6-4 6-1 and awaits the winner of the game between Katerina Siniakova and Veronika Kudermetova.